JPS5680734A - Memory system for control program of terminal device - Google Patents
Memory system for control program of terminal deviceInfo
- Publication number
- JPS5680734A JPS5680734A JP15754579A JP15754579A JPS5680734A JP S5680734 A JPS5680734 A JP S5680734A JP 15754579 A JP15754579 A JP 15754579A JP 15754579 A JP15754579 A JP 15754579A JP S5680734 A JPS5680734 A JP S5680734A
- Authority
- JP
- Japan
- Prior art keywords
- control program
- terminal device
- ram15
- stored
- memory system
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Abstract
PURPOSE: To make it possible to modify easily the control program of each terminal device, by providing each terminal device with RAM stored with the control program of the terminal device and a means of checking the control program.
CONSTITUTION: Plural terminal devices 121 (shown only one in the figure) having the same functions or similar functions are controlled by central controller 11. In RAM15, a control program for operating detecting means 161, mechanism driving means 162... of terminal device 121 is stored. When the power source of terminal device 121 is put to work, a check program is read out of ROM17 to check the memory contents of RAM15. If the control program in RAM15 is destroyed, a normal control program is obtained from RAM of another terminal device stored with the normal control program to update the contents of RAM15.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15754579A JPS5680734A (en) | 1979-12-05 | 1979-12-05 | Memory system for control program of terminal device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15754579A JPS5680734A (en) | 1979-12-05 | 1979-12-05 | Memory system for control program of terminal device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5680734A true JPS5680734A (en) | 1981-07-02 |
Family
ID=15652013
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15754579A Pending JPS5680734A (en) | 1979-12-05 | 1979-12-05 | Memory system for control program of terminal device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5680734A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59109931A (en) * | 1982-12-15 | 1984-06-25 | Omron Tateisi Electronics Co | Constant data transferring method of centralized control system |
JPS6210746A (en) * | 1985-07-08 | 1987-01-19 | Hitachi Cable Ltd | Non-volatile ram checking method |
JPS62126452A (en) * | 1985-11-27 | 1987-06-08 | Hitachi Ltd | Memory load system |
-
1979
- 1979-12-05 JP JP15754579A patent/JPS5680734A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59109931A (en) * | 1982-12-15 | 1984-06-25 | Omron Tateisi Electronics Co | Constant data transferring method of centralized control system |
JPS6210746A (en) * | 1985-07-08 | 1987-01-19 | Hitachi Cable Ltd | Non-volatile ram checking method |
JPS62126452A (en) * | 1985-11-27 | 1987-06-08 | Hitachi Ltd | Memory load system |
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